Opening or buying a restaurant
A busy restaurant is not necessarily a viable one. Test whether your menu, service plan and site can pay the bills and the owner's working role. Check that the kitchen and floor team can serve customers when they arrive.
This guide is SmallBizSim's own summary of public information and does not constitute business, financial, legal or tax advice.
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Demand
Start with the occasion customers will return for
Define the meal you are selling before choosing the restaurant's size. A quick weekday lunch, a family dinner and a leisurely celebration create different expectations for price, menu choice, service and time at the table.
A full Saturday does not settle viability. Quiet services still carry bills, while busy services may need more staff or expose a kitchen bottleneck.
Build demand assumptions by service: weekday lunch, weekday dinner and weekends, for example. A monthly average can hide customers arriving together while other services remain too quiet to support the lease.
Your offer should answer three questions:
- Who comes?
- Why do they choose you instead of another option?
- Why do they return at your normal prices?
Opening offers can test interest, but discounted sales do not establish demand at the price your plan needs.
Investigate the hours you intend to trade. Observe nearby competitors and test your offer where practical. Keep observations separate from assumptions you still need to test.
Money
Connect each cover to the cost of running the service
A cover is a diner served. For dine-in planning, covers multiplied by realised net spend per cover gives net sales. Realised spend is what customers actually spend after discounts and refunds—not the price of the main course you hope everyone orders.
Contribution is what a sale leaves to meet the remaining bills
Subtract costs that genuinely increase with each cover from net spend per cover. The remainder is contribution per cover. It is not profit: it still has to pay the costs that remain under the chosen service plan.
| Model input | How to establish it | Why it matters |
|---|---|---|
| Covers by service | Use trading records, a relevant trial or a clearly identified demand assumption | Monthly totals alone do not show when staff and kitchen capacity are needed |
| Realised net spend per cover | Use net sales and cover records, allowing for the expected menu and beverage mix | A change in what guests buy can change contribution even when covers stay steady |
| Costs that rise with covers | Cost recipes and pours from supplier prices; include waste allowances and applicable transaction costs | These reduce what each additional cover leaves to pay other bills |
| Baseline service payroll | Build the minimum workable roster, including preparation, service and closing hours | These paid hours may remain even when fewer guests arrive |
| Additional staffing | Identify when extra people, longer shifts or overtime become necessary | Contribution can be absorbed when volume crosses a staffing threshold |
| Other operating commitments | Use the lease and actual quotes for rent, outgoings, insurance, systems and other recurring costs | These continue through quiet trading periods |
For one defined service plan and period:
Operating break-even covers = costs fixed within that plan ÷ contribution per cover.
This adapts the general break-even formula to restaurant covers.34 Use the same period throughout and a representative menu mix. If contribution is not positive, adding covers cannot cover the remaining commitments under those assumptions.
Labour changes in steps, not necessarily with every diner
Use the roster you would actually run. A minimum kitchen and floor team may serve a range of covers. Beyond that range, you may need another cook, another server or overtime.
Include baseline payroll in the costs for that roster, then recalculate when the required staffing changes. Do not also put the same payroll into a per-cover cost. Include the owner's continuing working role once, whether the owner performs it or someone else is paid to do it.
Rather than relying on a single labour percentage, test whether the restaurant can cover the roster needed for its expected demand. Then test lower covers, a less favourable menu mix and the point where added staffing becomes necessary.
Owner's role
The owner's work extends beyond opening hours
A working owner may cook, host or manage the floor, but someone must also make the next shift possible. Unpaid purchasing, scheduling and closing work can make reported earnings look better than the job really is.
| Work to cover | During service | Outside service |
|---|---|---|
| People and coordination | Direct the shift, handle staff call-outs and resolve guest problems | Recruit, train, schedule and arrange absence cover |
| Food and purchasing | Maintain quality, check availability and deal with food-safety issues | Order supplies, control stock, plan preparation and review waste |
| Money and records | Authorise refunds and handle cash discrepancies | Review sales, payroll, invoices, cash and records |
| Premises and systems | Respond to equipment failure and decide whether service can continue | Arrange maintenance, update procedures and review menu and pricing decisions |
These are responsibilities to allocate, not a universal legal job description. Delegating them requires authority, reporting and follow-up, not just a manager's title.
Cover every shift without you
There is no universal owner-hours figure that makes a restaurant a suitable side business. Every necessary task needs a competent person, funded time and absence cover. If the restaurant only works when you fill every gap for free, you have not established an owner-independent operation.
Format
Fewer seats and more delivery solve different problems
A smaller dining room does not automatically mean a lower-cost restaurant. Removing tables from the same leased premises does not reduce rent. A smaller site may reduce bills, but it may also remove sales capacity during the services that matter most.
Assess delivery orders separately from dine-in covers, including platform charges, packaging and any extra labour. Kitchen capacity is only spare capacity if it is available when delivery orders arrive.
| Proposed change | Conditions that could make it useful | Conditions that could defeat it | What to check |
|---|---|---|---|
| Choose a smaller dining room | The premises cost actually falls; expected demand fits; the service plan can remove paid hours without weakening service | Lease cost stays unchanged; kitchen and management staffing remain; valuable peak demand cannot be seated | Compare written premises terms, party sizes, achievable covers and complete rosters, not seat counts alone |
| Add delivery during quiet periods | Orders add sales, leave positive contribution after channel costs and use otherwise available kitchen time | Customers switch from an existing channel; preparation needs extra paid hours; order mix is costly or slow to produce | Record contribution by channel, paid hours and ticket times during a limited pilot |
| Accept delivery through the dine-in peak | The kitchen can handle both streams without compromising service | Delivery competes for the same station, delays dine-in orders or triggers extra staffing | Track dine-in waits, delayed or rejected orders, complaints and staffing changes alongside delivery sales |
Research published in Management Science models how platform contracts and kitchen congestion can affect dine-in revenue.7 It explains a mechanism, not the average outcome for a restaurant or a current platform fee.
Use a time-of-day pilot to test the trade-off. Compare added contribution with additional operating costs and any contribution lost elsewhere, not just added revenue. A shorter menu may help execution. Judge dishes by preparation, station demand, ingredient use and contribution, rather than assuming fewer items guarantee a better business.
Buying
Test what survives the seller
An acquisition gives you trading history to investigate. Check what that history can support under your ownership.
New Zealand government buyer guidance recommends checking the books against sale materials and independent information, including seasonality.8 Queensland guidance identifies financial records, tax returns, leases, staff and supplier agreements, stock and equipment as diligence topics.9 Investigate these with an accountant:
Diligence with your accountant
Establish what can transfer. Have a lawyer examine lease assignment and landlord consent, relevant operating approvals, material contracts, employee arrangements and entitlements, and the sale structure. Check equipment ownership and condition, maintenance history, likely repairs and inventory. An equipment list alone does not establish usable assets.
Employment costs may not be freely reset after purchase. For example, where UK TUPE applies, employees' terms and continuity can transfer to the new employer.10 Have local advice establish the obligations for the transaction.
Entry path
Choose the entry path by the commitments it creates
New fit-out
A new fit-out lets you design around your service plan. Establish demand and obtain premises, construction and equipment quotes before relying on an opening budget.
Acquisition
An acquisition calls for verified trading records and a workable handover.
Franchise
A franchise needs the same site and operating analysis. Examine the actual agreement: fees, required purchases, support, operating restrictions, territory and exit terms. Branded support does not establish the location's economics.
Pop-up or home-based trial
A trial can test an offer, but its demand and costs may differ from a permanent dining room. Trials are not automatically outside food-business rules: Australian notification guidance explicitly includes small, temporary and home-based operations.11 Confirm the rules for the actual format and location wherever you trade.
Approvals
Check food-business approval before committing to premises
Food registration or notification is only part of the premises decision. Take your proposed menu, preparation methods, trading hours and activities to the relevant authorities. Ask about food approval, kitchen or plan review, inspections, permitted use, building and fire requirements, and alcohol and outdoor seating where relevant. Resolve outstanding approvals before relying on an opening date.
Food-business starting points by country
AU Australia
Official starting point: Notify the local food regulatory agency before starting.11 Confirm which food-safety management tools apply, including supervisor and training requirements for covered businesses.6
Important limit: State, territory and council permits depend on the activities and location.12 Notification does not cover every required approval.
NZ New Zealand
Official starting point: Under MPI guidance, a business registers with MPI or a council depending on its plan or programme and location. Food businesses must be verified.13
Next check: Confirm the required plan and verification arrangements. Auckland guidance explicitly separates food registration from approval of the trading location. Its other licence examples are local, not nationwide.14
CA Canada
Official starting point: Start with provincial or territorial and municipal food-premises requirements. Use BizPaL for a location- and activity-based permit search.15
Important limit: CFIA federal requirements depend on activities and trade, with some provisions applying within a province.16 British Columbia's restaurant guide identifies health and local zoning/compliance approvals, but it is not a Canada-wide checklist.17
GB United Kingdom
Official starting point: For England and Wales, FSA guidance requires registration with the local authority at least 28 days before trading.18
Important limit: That guidance does not establish Scotland's requirements. For a Scottish site, confirm the current process with its local authority and Food Standards Scotland. Do not extend England/Wales registration or alcohol guidance to all of GB.
US United States
Official starting point: FDA identifies restaurants as generally regulated by state and local government. Contact the responsible health and permitting authorities for the site.19
Important limit: The FDA Food Code is a model used by regulators. It is not a single uniform restaurant permit or a nationwide set of adopted rules.20
Funding
Keep opening finance separate from operating break-even
Operating break-even asks whether sales cover the defined operating costs. It does not tell you how much cash you need to open, repay borrowing or recover the investment.
- Prepare an opening funding schedule for the purchase or fit-out, equipment, deposits, opening stock, pre-opening payroll and other commitments.
- Prepare a separate cash forecast showing when receipts arrive and payments fall due.
Australian government guidance treats pre-income startup expenses separately from running costs.21 It describes cash-flow forecasting in terms of opening balances, incoming cash and outgoing cash.22
Do not choose the lease from the most optimistic case. Answer these questions before committing:
Before you sign the lease
Summary
Key takeaways
- Define the meal occasion and plan demand by service, not by monthly average.
- Contribution per cover is not profit. It must pay the costs fixed within your chosen service plan.
- Labour changes in steps. Recalculate when the roster needed to serve demand changes.
- Every owner task needs a competent person, funded time and absence cover.
- When buying, test what survives the seller: reconcile records, price the owner's work and confirm what transfers.
- Confirm local food-business approvals before committing to premises or an opening date.
- Keep opening finance and cash timing separate from operating break-even.
Sources
- Step 1: Sales
- Calculating your GST
- Break-even point
- Break-even calculator guidance
- Food safety supervisor
- Standard 3.2.2A: Food Safety Management Tools
- Managing Relationships Between Restaurants and Food Delivery Platforms: Conflict, Contracts, and Coordination
- Buying a business or franchise
- Due diligence when buying a business
- Business transfers, takeovers and TUPE
- Starting or changing a food business
- Register licences and permits
- Register a food business under the Food Act
- Apply for food registration
- BizPaL Initiative
- Starting or expanding a food business?
- Starting a restaurant in B.C.
- Starting a food business
- How to Start a Food Business
- FDA Food Code
- Calculate the start-up costs of your business
- Set up a cash flow statement